| Title |
A Optical System Design of LED Marine Lanterns Based on a TIR Collimator Lens |
| Authors |
Dong Hyun Go ; Yoon Chul Lee |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2015.29.11.001 |
| Keywords |
Marine Lanterns ; TIR Lens ; Optic Design ; LED Lighting ; Optimization |
| Abstract |
In this paper, we propose the optical system design for a medium sized LED marine lanterns which simplifies the multi-layer structure into a single structure. In order to satisfy the target fixed intensity(35,000cd) and vertical divergence(-2.5°∼-4.0°, +2.5°∼+4.0°), we use the total internal reflection collimator lens. And a Monte Carlo simulation has been utilized to optimize a condition of a LED package, TIR lens and outside lens. The computer simulation results indicated that this LED marine lanterns can produce of a fixed intensity(35,382cd) and vertical divergence(-3.1°∼+2.5°). Using the this optical system, we achieve the target value of LED lanterns. |